package com.how2java.tmall.web;

import com.alipay.api.AlipayApiException;
import com.alipay.api.internal.util.AlipaySignature;
import com.how2java.tmall.config.AlipayConfigs;
import com.how2java.tmall.pojo.*;
import com.how2java.tmall.service.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.util.*;

import static java.lang.System.out;


@Controller
public class CallBackController {

    @Autowired
    OrderService orderService;

    @Autowired
    ProductService productService;

    @Autowired
    OrderItemService orderItemService;

    @Autowired
    DepositService depositService;

    @Autowired
    UserService userService;

    /*
     * 购买商品
     *
     * */
    @RequestMapping("callback/notify")
    public Object notifyUrl(HttpServletRequest request, HttpServletResponse response, HttpSession session) throws IOException, AlipayApiException {
        System.out.println("callback/notify");
        Map<String, String> params = new HashMap<String, String>();
        Map<String, String[]> requestParams = request.getParameterMap();
        for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext(); ) {
            String name = (String) iter.next();
            String[] values = (String[]) requestParams.get(name);
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i == values.length - 1) ? valueStr + values[i]
                        : valueStr + values[i] + ",";
            }
            //乱码解决，这段代码在出现乱码时使用
            valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
        }

        boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfigs.ALIPAY_PUBLIC_KEY, AlipayConfigs.CHARSET, AlipayConfigs.sign_type); //调用SDK验证签名

        //——请在这里编写您的程序（以下代码仅作参考）——

	/* 实际验证过程建议商户务必添加以下校验：
	1、需要验证该通知数据中的out_trade_no是否为商户系统中创建的订单号，
	2、判断total_amount是否确实为该订单的实际金额（即商户订单创建时的金额），
	3、校验通知中的seller_id（或者seller_email) 是否为out_trade_no这笔单据的对应的操作方（有的时候，一个商户可能有多个seller_id/seller_email）
	4、验证app_id是否为该商户本身。
	*/
        if (signVerified) {//验证成功
            //商户订单号
            String oids = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"), "UTF-8");

            //支付宝交易号
            String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"), "UTF-8");

            //订单金额
            String total = new String(request.getParameter("total_amount").getBytes("ISO-8859-1"), "UTF-8");
            //交易状态
            String trade_status = new String(request.getParameter("trade_status").getBytes("ISO-8859-1"), "UTF-8");

            if (trade_status.equals("TRADE_FINISHED")) {
                out.println("TRADE_SUCCESS 验证成功");
            } else if (trade_status.equals("TRADE_SUCCESS")) {
                out.println("aTRADE_SUCCESS 付款成功");
                int oid = Integer.parseInt(oids);
                OrderItem orderItem = orderItemService.get(oid);
                Product product = productService.get(oid);
                product.setStock(product.getStock() - orderItem.getNumber());
                productService.update(product);
                Order order = orderService.get(oid);
                order.setStatus(OrderService.waitDelivery);
                order.setPayDate(new Date());
                orderService.update(order);
                return "order";
            }
            response.getWriter().println("success");

        } else {//验证失败
            response.getWriter().println("fail");
            //调试用，写文本函数记录程序运行情况是否正常
        }
        return "";
    }


    //同步通知
    @RequestMapping("callback/return")
    public String returnUrl(HttpServletRequest request, HttpServletResponse response) throws IOException, AlipayApiException {
        System.out.println("callback/return");
        HttpSession session = request.getSession();
        Object user1 = session.getAttribute("user");
        if (user1 != null) {
            out.println("session有值");
        }
        Map<String, String> params = new HashMap<String, String>();
        Map<String, String[]> requestParams = request.getParameterMap();
        for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext(); ) {
            String name = (String) iter.next();
            String[] values = (String[]) requestParams.get(name);
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i == values.length - 1) ? valueStr + values[i]
                        : valueStr + values[i] + ",";
            }
            //乱码解决，这段代码在出现乱码时使用
            valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
//            response.getWriter().println("name"+name+"value:"+valueStr);
        }

        boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfigs.ALIPAY_PUBLIC_KEY, AlipayConfigs.CHARSET, AlipayConfigs.sign_type); //调用SDK验证签名

        //——请在这里编写您的程序（以下代码仅作参考）——
        if (signVerified) {
            //商户订单号
            String oid = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"), "UTF-8");
            //支付宝交易号
            String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"), "UTF-8");

            //付款金额
            String total = new String(request.getParameter("total_amount").getBytes("ISO-8859-1"), "UTF-8");

         //   String store_id = new String(request.getParameter("body").getBytes("ISO-8859-1"), "UTF-8");
            //回商品页面

            int pid = Integer.parseInt("89");
            //加购物车
            Product product = productService.get(pid);
            int oiid = 0;

            User user = userService.getById(89);
            out.println(user);
            boolean found = false;
            List<OrderItem> ois = orderItemService.listByUser(user);
            for (OrderItem oi : ois) {
                if (oi.getProduct().getId() == product.getId()) {
                    oi.setNumber(oi.getNumber() + 1);
                    orderItemService.update(oi);
                    found = true;
                    oiid = oi.getId();
                    break;
                }
            }

            if (!found) {
                OrderItem oi = new OrderItem();
                oi.setUser(user);
                oi.setProduct(product);
                oi.setNumber(1);
                orderItemService.add(oi);
                oiid = oi.getId();
            }

            return "fore/home";//todo 跳转哪个页面
        } else {
//            out.println("验签失败");
            return "fore/home";
        }

    }
}
